Inclusion of Turbolinks is new with Rails 4.0. It works with Ruby 2.0.

What’s going on is that turbolinks speeds things up when you navigate from one page within your site to another page within your site. It doesn’t do anything unless your previous page is within this site.

The scenario in this section is dealing with the front page of your site… so most of the time you won’t see turbolinks events, but rather the traditional jquery/dom events.

So this is effectively an errata on the book, and the fix (which I’ve already applied to my source) is as indicated above and to add a few sentences of explanation. This will be pushed out with the next update (ideally concurrent with or shortly after rails beta2).